Operating mechanism for valveless plunger-pumps.



ATTORNEY.'

EINEN-ran.' ADOLF SEL LIN A. SELLIN.

OPERATING MECHANISM FOR VALVELESS PLUNGER PUMPS.

APPLICATION FILED JUNE 9,1915.

Patented Sept. 3, 1918.

&

ADOLF SELLIN, OF STUTTGART, GERMANY.

OPERATING MECHANISM FOR VALVELESS PLUNGER-PUMPS.

Application led .Tune 9, 1915.

To all whom t may concern.

Be it known that I, ADoLr SELLIN, a citizen of the German Empire, residing at Stuttgart, in the Kingdom of Wurtemberg, Germany, have invented certain new and useful Improvements in Operating Mechanism for Valveless Plunger-Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in operating mechanism for valveless plunger pumps, and more particularly for pumps for forced feed lubrication.

The inventionillustrated in the drawings shows an arrangement designed for supplying lubricant to four places, but it should be understood that it can be applied to any number of places by simply arranging a similar construction on the opposite side of the worm wheel to that shown in the drawings.

In the drawings, Figure 1 is a side elevation of a devicecomprising a plurality of pumps according to the present invention.

Fig. 2 shows a transverse vertical sectional view, partly in elevation, taken on one of the pumps.

Fig. 3 is a similar view with the movable parts in a different position.

Fig. 4 is a plan showing the parts in one position.

Fig. 5 is a plan of part of the device showing the parts in another position.

Fig. 6 is a plan of a detail.

Figs. 7 8, 9, and 10 show different relative positions of some of the movable parts.

Fig. 11 is a plan of a detail.

Referring more particularly to Figs. 1, 2 and 8, in the cylinders l are disposed plungers 2 provided with suit-able ports 3 and 4. A cam 5 iiXed on the worm wheel 6 engages the yoke 7 in a square aperture 8 therein. The plungers 2 are held in engagement with the yoke by means of nuts 9 and 1() in such manner that the said plungers may be partially rotated or turned by means of a wrist pin 1l mounted on the plate l2 on the plungers and engaging in a recess 13 in the said yoke. The plungers 2 are dalso provided with a longitudinally extending channel 2O communicating with the cylinder through the bottom of said plunger. Transverse channels 21 and 22 are also provided in said plungers and extend from the center channel Specification of Letters Patent.`

` Patented Sept. 3, 1918. serial No. 33,146.

20 to communicate, at different periods' of the stroke, with, respectively, the inlet 14 andthe outlet 15 through, respectively, ports 3 and 4.

Owing tothe peculiar form of the cam 5, which engages in the square aperture 8 of the yoke 7, the said yoke is given, not a uniform circular movement, but an intermittent four-motion movement, first to the left (Fig. 7), then upward (Fig. S), thence to the right (FigxQ) and linally downward (Fig. 10). In order that the yoke may be moved laterally, as required in the four-motion movement, elongated recesses 16 are provided therein, as shown in Fig. 6.

The arrangement of the parts is such that the operating yoke, when moving up or down, does directly reciprocate the plungers for the suction and pressure periods, and then moving sidewise, in either direction, merely causes the plate 12 and wrist pin 11 to turn the plungers to suitable positions in order to register with the inlet and outlet. All movements of the yoke are directly contributed thereto. by the cam,

The operation of the device is as follows The worm wheel 6 being revolved also turns the cam 5, and this cam, through engagement with the square aperture 8, imparts an intermittent four-motion movement to the yoke 7 During such four-motion movement, the plunger being in the posi- `tion shown in Fig. 2, the cam 5 engaging the yoke through the square aperture forces the yoke from the position of Fig. 7 to the left and, by means of the wrist pin 11, plate 12 and recess 13, turns the plunger so that the port 3 will register with the inlet 14, and thus at the same time turns the port 4 out of register with the outlet 15; as the cam 5 continues to turn the yoke is raised from the position shown in Fig. 8 and drives the plunger upward, which then causes the lubricant to enter the cylinder; in the neXt phase of its operation, the cam forces the yoke from the position of Fig. 9 to the right, and, by means of the above-mentioned wrist pin, plate and recess, the plunger is again turned. The plunger is now turned so that the port 4 will register with the outlet 15, and the port 3 is turned so as to be out of register with the inlet. In the next and last phase, the cam forces the yoke downward from the position shown in Fig. 10, and during this movement theV yokeV drives the plunger on its downward stroke thereby expelling the lubricant from the cylinder through the out# let. i Y .i i' Y lideclare that lwhat I claim Y `1'. A pump, comprising a plunger Vand cylinder formed 'With distributing ports'and passages therein, a yokev adapted tol oommunioate movement to said plunger, means reciprocating movement to said yoke, and and Vtol communicate an intermittent up and Y for eommunieatingan intermittent up and down andl also a lateral reeiproeatory move-.

ment to said yoke and meanseonneeting the said yoke With the plunger, whereby Ythe plunger shall also receive a four part movement. i f f l 2. A pump,vco1nprisinga plurality of plungers and cylinders Vformed withV distributing ports and passages ltherein,ra yoke v Connecting together and controlling the said lunfrers Va cam for eommunieatin -anintermittent up and down, and also a lateral means connecting the saidV yoke plungers, whereby the plungers shall, also receive a four. part movement.

3. A pump, comp-rising a pluralityfof plungers and cylinders 4formed with vdis- Y tributing ports and passages therein, ayoke.

connecting, together and operatingY said plungers, a quadraticY aperture in the yoke, a cam operating in said aperture and-adapted Copies of this paltentrrniay bevobtained for do'yvn and Valso a' reciprooatory movementV to Y said yoke, and means connecting the said yoke'td the plungers whereby the plungersY shall also receive a vfour Vpart movement.

i il. A pump, comprising a plurality of vplungers and oyiinders formed with distributing ports and passages therein, a yoke connecting,Y together and operating said plungers, a quadraticv aperture in the yoke, a cam operatingin said apertureandgadapted toV communicate an intermittent up and down and alsol a reeiproeatory movement thereto,v and slots in said yoke for permit# ,ting vlateral movement thereof.

, 5.V`)A,pump,'eompr1s1ng a plurality of vplungers and cylinders ,formed With dis'- tributinfr orts and )assaoes therein af oke 'Y connecting .together yand operating said plungers, a quadratic aperture in theryoke, a cam voperating in said aperture and adapted toroommunioate .an intermittent up and down and v also a` reoiproeatory movement thereto, v and slots in saidV yoke for permit ting lateral movementfthereof, and means for Communicating a turning movement to the plungers V:from the yoke. Y

Intestimony whereof I, aiX my signature. in presenoefoftvvo Witnesses. Y Y ADOLF SIELTJN'.' Witnessesz v 'j RICrrARD B Annirs, ROSA THALBAUER.

five cents each, by addressing tlii."( !mmissioner of itts. Washington, D. C. Y Y Y 1 

